Side bearing for railway-cars



W. A. GEIGER.

SIDE BEARING FOR RAILWAY CARS.

APPLICATION FILED JUNE 12, 1919.

1,357,770. Patented Nov. 2, 1920.

1.9 26" I V 'H WW z g Y '1', L Z mi 13 1/ UNITED STATES PATENT OFFICE.

WILLIAM A. GEIGER, CHICAGO, ILLINOIS, ASSIGNOR T0 WILLIAM H. MINER, 0F OHAZY, NEW'YORK.

SIDE BEARING FOB RAILWAY-CARS.

Application filed June 12, 1919.

To all whom it may concern:

Be it known that ii, WILLIAM A. Galena, a citizen of the United States, residing at Chicago, in the county of Cool; and State of illinoi s, have invented a certain new and useful improvement in Side Bearings for Railway-Cars, of which'the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in side bearings for railway cars.

The object of my invention is to provide a simple gravity centering side bearing.

in the drawings forming a part of this specification, Figure 1 is a cross section of portions of the bolster of a railroad car with my improved side bearing applied, the said side bearing being shown in longitudinal vertical section and partly in elevation. Fig. 2 is a horizontal section taken on line 2-2 of Fig. 1. And Fig. 3 is a cross section taken on line 3-3 of Fig. 1.

Referring to the drawings, the numeral 10 indicates the lower portion of a body bolster of a railway car and 11 the upper portion of a truck bolster thereof. In the embodiment of my invention illustrated, the bearing is attached to the lower or truck bolster and includes a base member 12 provided with the flanges 13 by means of which it is secured to the bolster 11 through the agency of the rivets 113113. The base member is a hollow substantially rectangular casting open at top and bottom and having in its lower portion, and resting upon the bolster 11, a base block 14: which is secured to the base member by the cotters 15. A hearing plate 16 is supported on the block 14; and is insertible within the base member through the open bottom thereof.

An anti-friction member 18 is mounted upon the bearing plate 16 and is adapted on approaching movement of the bolsters to en gage between it and the upper bearing plate 10, which, in the illustration, is the lower face of the body bolster 10. The anti-friction member 18 is in general cross section a parallelogram having two of its diagonal corners, the upper and lower, 19 and 20, respectively, rounded, as clearly shown in Fig. 1 of the drawings. At its lower corner 20, it is provided at either end with an outwardly projecting and upwardly extending gear tooth 21, each tooth being received within a Specification of Letters Patent.

Patented Nov. 2, 1920.

Serial No. 303,624.

recess 22 formed in the adjacent side wall of the base member. The recess 22 is substan tially spanned by the tooth 21. These teeth 21 are conformed to permit the rocking of the anti-friction member in either direc tion and yet to prevent any sliding thereof which will disturb the relation of the parts and prevent the return of the anti-friction member to central position after its actuation. The opposite sides 23 and 24L of the anti-friction member are substantially parallel. to each other and likewise the opposite sides 25 and 26 thereof are substantially parallel. Said sides 23 and 26 and 24 and 25 are tangent to the curved edges 20 and 19, as will be apparent.

n approaching movement of the bolsters, the engagement of the anti-friction member by both upper and lower bearing plates will cause its actuation in either direction, and, upon removal of the pressure, it will, through gravity, return to normal. On its extreme movement to the left it will assume the position indicated by the dotted lines reference 27 in Fig. l of the drawings. When in this position, it will be noted that the face 23 is in close proximity to the adjacent end wall of the base member, the face 25 engages the bearing plate 16 and the parallel face 26 is engaged by the upper bearing plate, and, should the length of the relative movement of the bolsters be suiiicient to bring the anti-friction member to its extreme position, then upon further movement of the bolster, should there be any, the upper bearing plate may slide upon the flat face 26. Upon release of pressure upon the anti-friction member, the center of gravity will be inward of its inside bearing point and the anti-friction member will return to normal or central position.

The contour of the edges of the teeth or projections 21 and the interior contours of the edges of the base castings forming the recesses 22 are so formed that the two parts, the teeth and the walls of the recesses, will not frictionally bind or engage during rocking or rolling movements of the anti-friction element, but the width horizontally of the teeth in any position of the anti-friction element will correspond substantially to the distance taken horizontally between the upwardly extending walls forming said recesses 22. By this construction, it is evident that the anti-friction element will be permitted free rolling movement but at the same time will be prevented from any accidental bodily displacement resulting from jarring or other-causes. It will also be noted that the teeth or projections 21 serve another function and that is the function of counterweight in returning the anti-friction element to its normal position after it has been actuated and relieved of the load, since said teeth will obviously be to the inner side of the center of mass or weight of the antimember havin substantially parallel sides,

said anti-friction member on extreme movementhaving two sides parallel with the end walls of the base member and two sides I parallel with the bearing plates.

2. In an anti friction bearing of the character described, the combination with a retaining member having a fiat horizontally extending bearing surface, of an anti-friction element retained by said member, said element having upper and lower concentrically curved bearing surfaces, one of which is adapted to roll upon said bearing surface of the retaining member and the other to roll upon an opposed relatively moving bearing surface, said anti-friction element having four flat surfaces, each arranged tangentially to one of said curved bearing surfaces, and cooperating means on said element and member adapted to always maintain proper relation of said anti-friction element and retaining member, said means including a recess and a tooth projecting into said recess, the distance transversely of the tooth always substantially approximating a corresponding transverse dimension of the recess.

3. In a side bearing for railway cars, in combination: a hollow base member; an anti-friction member mounted therein, the antifriction member having upper and lower curved bearing surfaces and substantially parallel, diagonally opposite, bearing surfaces, said diagonally opposite bearing surfaces extending lengthwise of the antifriction member. 7 r

4. In a side bearing for railway cars, in combination: a hollow retaining member having a bearing surface therein; and an anti-friction member having two sets of opposed, parallel, bearing surfaces extending lengthwise thereof and upper and lower, diagonally opposite, rounded edges also extending lengthwise thereof, said anti-friction member being provided near the bottom thereof with gear teeth extended laterally from the ends thereof and the retaining member being provided with recesses to receive said teeth. v

In witness that I claim the foregoing I have hereuntosubscribed my name this 28th day oflWlay, 1919.

WILLTAM A. GEIGER. 

